@Riot Update on Evelynn rework?

I play eve a LOT. She is my only champ i rely on to carry games. Since I heard she is being reworked after Galio is done, I've been experimenting with some other champs cuz I know after a VGU a champ can be totally different(like warwick) or borderline garbage (like Fizz after most recent changes).

It kinda feels bad that I'm still spamming her and finding whats great builds for different situations, knowing what to do with her in a particular game situation etc...It will all totally change after she is reworked. I felt the pain of this when i used to main support and developed a fettish for taric. The taric got reworked into something totally different and no longer fun to play for me. Used to main udyr also, then in preseason 6 he got the shit nerfed out of him and the last straw was the removal of devourer/rageblade. So I've had some sad experiences with some champs I liked and reworks.

I just want to get to plat this season playing Evelynn and then I'll play learn some other champs in normals like shaco and graves and hec are some of the ones I feel fit my style of play, since I know the Eve of today is not going to be the same at all soon and I may not enjoy playing her post vgu.

Anyway. What's the timeline look like on this? Any details on how drastic the changes will be?