We have been working really hard to improve the cart and checkout experience to make it fully responsive and easier than ever to add to any website for any product for any user on any device. Check out this landing page we just launched today with a promo video and an email signup for 2.0 status updates. We're also giving away a free ebook about PCI compliance which you and your clients may find very helpful.
Let us know what you think! We're really excited about this update as it will provide a lot of powerful flexibility for custom ecommerce.
Edit: We care deeply about quality. As such, we won't be launching 2.0 until it's ready. We're using 2.0 on our own store used to pay for FoxyCart services, so we're getting close. Stay tuned for updates.