Yes, Valve also requested submissions from Steam Workshop creators to have their work considered for the as-yet-unnamed update.
The deadline for submissions is May 1st.
Im sure TF2 players will come up with some exciting stuff if the modding communitys history is any indication.

Last year, players modded Team Fortress 2 to implementparkour elementsfrom the other TF2,Titanfall 2.
Team Fortress 2 is the gift that keeps giving, and its generous reach extends past the game.
Recently, the TF2 cast continued their chaotic sandwich-spree with arendition of ABBAs Mamma Mia- its just endlessly wholesome.

(Or back to work, if you were already working.)
Team Fortress 2 is currently a free-to-play download onSteam.