actually surprised that wpengine didn't go for compiling wordpress into executable (cgi ?) till now.
they shoe nice improvment but I wonder how much improvement do you get over using APC and object caching, After all it is not a surprice that when you embed the PHP core into a webserver you get faster execution of PHP based pages
and the whole point of HHVM for facebook was to enable faster code distribution to servers, something that I assume most wpengine clients don't care about.
WordPress 4.0.1 is now available. This is a critical security release for all previous versions and we strongly encourage you to update your sites immediately. Sites that support automatic background updates will be updated to WordPress 4.0.1 within the next few hours. If you are still on WordPress 3.9.2, 3.8.4, or 3.7.4, you will be […]
Ugh, the language in that WPEngine blog post. "Apply for consideration" to determine whether you're worthy enough to get onto a hosting stack that just about brings WPEngine up to date. I don't think so