The dnssec-validator.cz team released an updated version of their plugin with added support for validating TLSA records, you can get it here for Firefox, Chrome and Internet explorer across multiple platforms and 32 & 64 bit architectures.

I noticed a few days ago that Postfix had TLSA support added.

I also noticed that there's now another TLSA plugin for firefox, DANE Patrol, unfortunately it doesn't seem to work very well :(