Interesting to hear that Microsoft has added TXT support alongside MLE. Sorry, no more info on it than above tweet….
From Wikipedia: Numerous server platforms include Intel TXT, and TXT functionality is leveraged by software vendors including HyTrust, PrivateCore, Citrix, Cloud Raxak, and VMware. Open-source projects also utilize the TXT functionality; for example, tboot provides a TXT-based integrity system for the Linux kernel and Xen hypervisor.