In a rare (for them) zero-fanfare move, Apple has now modified iTunes so that clicking on a music/video/app link will not only launch the iTunes program itself — it also launches a browser-based preview window (for example). The preview displays the app logo (or cover art), price, description, screenshots, rating, reviews, etc. Music links include preview files, another recent (and under-the-table) enhancement.
We at iSmashPhone.com have never been fans of the iTunes software; it's a big ol' kludge that sticks out like a sore thumb within the Apple design aesthetic, and its insistence on being cemented to one computer harks back to the bad old days of Lotus 1-2-3 copy protection. Still, we can't deny its one-click shopping model has been a trailblazer for online commerce. Without iTunes, the success of the iPhone App Store would never have happened.
The question now remains: will this Web-preview add-on to iTunes remain just that, or will we eventually see iTunes migrate to a full-blown web/cloud implementation?