Yesterday a blogpost announced a new feature

for editing Wikipedia from mobile.

Via twitter they confirmed that also Wikisource and all other project can be edited:

do you confirm that? how is the user experience?

Maybe we could file some bugs (if any), to improve the Wikisource editing...

I don't have a smartphone, so I don't know if it is useful for us or not (what about the proofread extension?)

We can contact them at @WikimediaMobile on Twitter.

Aubrey