Why can't I switch to the new version of Blogger?

Blogger Help: "While the new version of Blogger is no longer in beta, some users with certain types of blogs will not immediately be able to switch to it. We'll be adding support for these blogs as soon as possible, so everyone can join in the fun. But for now, if you have a very large blog (more than a couple thousand posts + comments), you'll need to hold off for a bit.

Note that, even if your blog is eligible to switch, you may not have the link to do so on your dashboard. We are starting out by just switching over a limited number of accounts, but we'll add more and more as time goes on. However, if you still want to try out the new version of Blogger, what you can do is to visit beta.blogger.com and create a new account. Later on, you'll be able to merge this account with your original Blogger account.

Thanks for your patience, and we promise it will be worth the wait!"