Eskisi kırıldı, yenisi yarın gelecek.

They mean the old one and the new one.

• eski = old
• yeni = new
• eskisi = the old one
• yenisi = the new one

In Turkish, this structure is very common when the actual noun is already understood from context. So instead of repeating the item, Turkish just says the old one / the new one.

The -si is a 3rd person possessive suffix. In forms like these, it helps turn an adjective into something like the ... one.

So:

• eski = old
• eskisi = its old one / the old one
• yeni = new
• yenisi = its new one / the new one

In natural English, you usually translate these simply as the old one and the new one, not literally as its old one.

This is a very common Turkish pattern:

• büyüğü = the big one
• küçüğü = the small one
• iyisi = the good one / the better one
• yenisi = the new one

Yes, conceptually there is an understood noun, but Turkish often leaves it out if it is obvious from context.

For example, if you were talking about a phone:

• Eskisi kırıldı, yenisi yarın gelecek.
• The old one broke, the new one will arrive tomorrow.

The hidden noun might be telefon, buzdolabı, araba, gözlük, or anything else. Turkish does not need to repeat it if everyone knows what is being discussed.

Because eski and yeni by themselves are usually just adjectives: old and new.

If you want to say the old one or the new one, Turkish commonly uses:

• eskisi
• yenisi

Compare:

• eski telefon = old phone
• yeni telefon = new phone
• eskisi = the old one
• yenisi = the new one

So the sentence needs eskisi and yenisi, not just eski and yeni.

Kırıldı means broke or got broken.

It comes from:

• kırılmak = to break / to get broken / to be broken

And here:

• kırıl- = break, become broken
• -dı = past tense

So:

• kırıldı = it broke / it got broken

This is different from kırdı, which would usually mean he/she/it broke it.

So:

• Telefon kırıldı. = The phone broke.
• Telefonu kırdı. = He/she broke the phone.

Because in Turkish, forms like kırılmak can often function like English be broken or break in an intransitive sense.

So kırıldı can sound like:

• it broke
• it got broken
• it was broken

Which English version fits best depends on context.

In this sentence, the old one broke is the most natural English translation.

Gelecek means will come.

It comes from:

• gelmek = to come
• -ecek / -acak = future tense

So:

• gelecek = will come

Turkish often uses gelmek for things that will arrive, be delivered, or show up, even if English might sometimes prefer arrive.

So here:

• yenisi yarın gelecek = the new one will come tomorrow
• More natural English: the new one will arrive tomorrow

Both ideas are fine.

Because Turkish often leaves out pronouns when they are already clear from context.

Also, in this sentence, the subjects are already expressed:

• Eskisi = the old one
• yenisi = the new one

So Turkish does not need an extra word for it.

This is very normal in Turkish. Once the context is clear, Turkish prefers not to repeat unnecessary words.

Turkish word order is flexible, but the neutral order is often:

subject + time + verb

So:

• yenisi = the new one
• yarın = tomorrow
• gelecek = will come

That makes:

• Yenisi yarın gelecek.

Other orders are possible for emphasis, for example:

• Yarın yenisi gelecek. = Tomorrow, the new one will come.
• Yenisi gelecek yarın. = less neutral, more marked

The original sentence uses a very natural, standard order.

Not always, but very often.

Time expressions in Turkish commonly come before the verb:

• Bugün gidiyorum. = I am going today.
• Yarın gelecek. = It will come tomorrow.
• Geçen hafta gördüm. = I saw it last week.

But Turkish allows movement for emphasis:

• Yarın gelecek.
• Gelecek yarın. (more emphatic or marked)

So in your sentence, yarın gelecek is the most natural neutral order.

Grammatically, yes. Practically, not completely.

You can understand the structure:

• the old one broke
• the new one will arrive tomorrow

But you still need context to know what thing is meant.

That is completely normal in Turkish. Speakers often rely on shared context instead of repeating the noun.

Yes, but the meaning changes slightly.

• kırıldı = broke, got broken physically
• bozuldu = stopped working, went bad, malfunctioned, became spoiled

So:

• Eskisi kırıldı suggests physical breaking.
• Eskisi bozuldu suggests it stopped functioning or went bad.

For example:

• A glass or plate: kırıldı is more natural.
• A machine or appliance: bozuldu is often more natural.

The comma separates two closely connected clauses:

• Eskisi kırıldı
• yenisi yarın gelecek

In English, you might naturally say:

• The old one broke, and the new one will arrive tomorrow.

Turkish often links short related clauses with just a comma, especially when the connection is obvious.

So the comma here is very natural and helps show that these are two related statements.