Today an update was pushed to the Test Server and some new items have appeared in the game files, but as of yet we have not confirmed if these are available in-game...
Also, the Flashbang is now called M-84 Stun Grenade:
 
There are also some references that some may find interesting:

• [[*key*]] Claim [*target*]
  • It looks like this is related to fixing the claiming of unowned foundations.
• [[*key*]] Undo placement of [*target*]
  • Looking to be referring to the ability to pick up placed structures within 30 seconds.
• You may not build structures in the quarantine area.
  • Maybe referring to restricting building beyond the limits of the map.

This all looks very promising!