Any news on the next level increase?
No. I suggest you simply keep any eye on the official Twitter or the BL3 News thread, since any level increase would be announced there. If there’s going to be one (and I have no idea whether or not there is), my guess would be either with Mayhem 2.0 or after the last paid DLC. But those are literally just guesses - I have zero inside knowledge.
If you look at how bl2 did this, the first level upgrade didn’t release until after dlc3 had dropped. It’s just my wild guess that bl3 will emulate this release order in some way or another.