more challenge signups
soul2soul, a multi fandom exchange focused on soulmates and soul bonds, has opened sign-ups until April 13th. More rules and info can be found here.
Sapphic Spring is a femlslash ficathon where you fill a prompt and then submit three of your own. Details and the post can be found this way.
If you like recc'ing fics,
fancake has opened their new round and the theme is "novel length", which means fics that are at least 60k. Community guidelines and rules can be found here.
unconventionalcourtship is a multifandom fanfic challenge, where you write at least 1k words based on a Mills & Boon/harlequin novel. More info and sign-ups here.