"Though nothing has been announced publicly, certain of the blog posts suggest that outside investment was secured in the second-half of August. Ten thousand users is a benchmark that Silicon Valley VCs often cite for seed investment."
The first post that Bud linked to was on the FeedDigest blog and says "a major announcement" is imminent. In a follow-up post, Peter says there will be "a new architecture in the next week or two." On the FeedDigest homepage it says new stats features are on the way, plus podcasting and email services.
Sounds great, can't wait to see the new version.