End of Delve / Start of Next League?

Possible noob questions here, but...

Does anyone know when the Delve League will wrap up? If so what's the normal/average turn around time for the following league to begin?

I'm enjoying Delve quite a bit, and don't plan on bailing on it anytime soon. This is only my 2nd league, so I'm unsure of the normal time windows for the leagues. If there is a definite time, I will probably schedule vacation from work to play a ton during the beginning of the next league.

Thanks in advance for the help! :)

Thanks for the info! :)