Extensis has released a free beta of their Web Font Plug-in for Photoshop CS5+. The plug-in (a panel) allows you to use fonts from WebINK (a web font rental service from Extensis) in the creation of website mock-ups in Photoshop. Using the plug-in requires downloading a trial version of the Suitcase Fusion 3 font manager, though it’ll keep running even after the trial period expires.
I haven’t yet gotten to try out the panel, but I’m intrigued. If you have feedback on it or just general thoughts on Web fonts & design tools, please chime in.
Update: Here’s an in-depth overview & demo video.