We have been doing some extensive work with the 4.1 branch of X-Cart (currently release 4.1.7) and it appears it is almost ready for prime time. We still aren't using it for sites that will go live in the next month, but we are hoping that by July 1 we will be able to transition from the 4.0 branch to the 4.1 branch. There are still some bugs that will hopefully be worked out with 4.1.8, but for the most part it seems to benchmark better than 4.0, and the code is much cleaner. Still some remaining font tags, but the Qualiteam folks seem to have realized that W3C compliant code is the way to go.
New sites launched in the past month include:
Organised Mum - a UK based store featuring calendars, diaries and schedules for families. This store features Thickbox image display paired with the Cerdman dynamic image resize tool. We have also used our Streamlined Checkout module here.
Anycake.com - This was a complete re-design of an existing store based in Northern Ireland, also featuring our Streamlined Checkout modification.

