Learn Swedish: Vi ska släppa den nya uppdateringen om två dagar. - We will release the new update in two days.

In Swedish, when you want to express that an event will happen in a certain amount of time in the future, you use the preposition om. So, om två dagar means "in two days". Be careful not to use i: if you said i två dagar, it would mean you are doing the action for two days!

Why does it say den nya uppdateringen instead of just nya uppdateringen?

This is the Swedish "double definite" rule. When a noun has a definite ending (like the -en in uppdateringen meaning "the update") and is described by an adjective (nya), you must also add the separate word for "the" (den, det, or de) before the adjective.

Why use ska here instead of kommer att for the future tense?

Both ska and kommer att can translate to "will", but ska implies a personal intention, a promise, or a planned decision. Since releasing a software update is a scheduled plan made by the speakers, ska is the most natural choice here.

Does släppa always mean "to release" like a software update?

Yes, släppa works very similarly to "release" in English. You can use it for software, music, or news. Its original, physical meaning is "to let go" or "to drop" (like letting go of a bag or a rope).