Anyone else notice JTR squads received some kind of boost?

Speaking as someone who runs an RJT arena team, the only change has been when I've powered it up by adding zetas (two since I first began using it), better mods (a couple of major speed increases), or G12 gear pieces (also a couple). And they've increased my combat effectiveness considerably, so I'm positive that what the OP is seeing is the result of people like me making the team stronger, not some conspiracy stealth buff.