Microsoft noted in a blog post that it has improved its performance in getting new apps listed in its Windows Phone Marketplace, stating that it now takes “roughly 3 to 4 business days to certify and publish an app” – an improvement of 20 percent to 30 percent.

In a blog post, Todd Brix, senior director of Windows Phone Marketplace for the company, said that following developer complaints, it “investigated, and made some changes to improve things.” This included removing app information which was no longer used and “frankly just slowing things down.”

However, he also noted that these are “modest improvements,” and that the company is building a faster and more scalable marketplace for launch later this year. “Until that work is finished later this summer, it’s possible that publishing and certification times could increase again. We’re doing everything we can to prevent that, but I also want to set realistic expectations,” he noted.

Microsoft has also made changes to “improve the overall performance and stability of App Hub”. It said that users of the service, which enables developers to create reports on an app's performance, is now faster and more reliable – previously some users, especially those with large app portfolios, had experienced time-outs.

Brix concluded: “These changes do not address all of your feedback and concerns. I wanted you to know that we continue to look for ways to resolve or reduce the impact of issues and provide a better Marketplace experience. I’ll check back periodically with news and information, good or bad.”