Yes, albeit what I'm planning is a fan zine that will carry scenarios, rather than a commercial venture:
Uncounted Worlds | Basic Roleplaying . Net
I'm hoping to pull together a first issue of two or three scenarios and a few other bits and pieces for this summer - but I have very little free time at present as my day jobs in meltdown.
As for other people I don't know - Chaosium are certainly interested in looking at proposals as I understand it...
Cheers,
Nick Middleton