The most important thing that has changed!
The patch is no longer inside the maps like it was with all previous releases.

The game itself is now patched which means you can now play Custom Maps on the new Community patch 1.02+
https://www.youtube.com/watch?v=_RBE1ZYJi4U

Pros and cons

• ✅More stable games and less RAM usage
• ✅Everyone is on the same patch so no desync on patch mismatch
• ✅Custom maps also include the patch
• ✅Play mods on the All in One, WEC and Arcade MapPack (with 1.02+ disabled)
• ✅The [SD] Standard Map Packs for mods are history and no longer required
• ❌Once you installed the 4K add-on or All in One Map Pack you can no longer play with other that do not have the new patch
• ❌You cannot simply play a Custom maps if your teammate does not have the patch *(Lobby name will be greyed out)*.

What to Install

All Map packs have been updated Click here.
The new patch R25j works with all the downloads below

All in One Map Pack
WEC Map Pack
Arcade Map Pack
4K Standard or 4K Alternate (Is Optional)

Can i still play mods?

Yes, all above Map Pack work with mods as long the patch 1.02+ is disabled. 102Scripts.big and 102texturefix.big.

Changelogs

https://docs.google.com/document/d/1LMfH_2jcBjOpHu4E0ZB7yAgqojlhO2nA55yLw-DXzMM