Everyone keeps taking the statement about "big boosts" to both offenses to mean they'll be equal, but I hardly think that's guaranteed. I hope they favor Attack over Sp.Attack since a bulky Dragon Dancer using Pixilate Return would be quite potent. Defense is looking at a smaller boost, probably around 10-20. Speed and Sp.Defense may well go untouched, since many Megas only get buffs to around 3 stats.
Could be 40/40 for the offenses, could be 45/35, could be 50/30, but it's definitely going to put them in the low hundreds range, which should be plenty viable given it's bulk, typing, and barely passable speed. Could play bulky attacker or a support/cleric wall, it's got a lot of moveset options.
It's special movepool is vast, but can't be boosted. Attack should get more points since the moves are stronger and DD exists. UNLESS GameFreak goes crazy and gives it Boomburst because of it's singing themes, sound-based moves, and access via breeding to Noivern, Chatot, and Swellow. It makes just enough sense that I could see them doing it, and it would be truly beautiful overkill, but I wouldn't hold your breath waiting for it. Fun to speculate, though.
