[I love to see more of Ash's Pokemon evolve, remember just Chikorita evolved, then Ash never caught a HootHoot, and the other starters never evolved? I'm glad to see the writing is FINALLY letting Ash evolve his teams, maybe he'll have better luck in Hoenn with an evolved team and finish higher. Ash should do great with Grovyle/Swellow, maybe they'll let Grovyle become Sceptile, be nice to have Ash's Pokemon at the final stage of evolution.
As for the rumor on Brock's Lombre evolving, FALSE RUMOR, it was a trainer with Ludicolo.
How many times must we be subject to 'wild Pokemon belongs to trainer or gym leader eps?