07/01/2009, 11:28 AM
Regarding the Pre's ability to load web pages in the background, yes it is able to do it. I just opened up 3 Web cards and had each load up a bookmark of a fairly complex page. It did load up each page completely, but it didn't update the card view surprisingly. The card view shows up as a white card, but upon opening up the web card, the page just appeared (no additional page download necessary, no additional page rendering, the page just appeared and was useable).
Originally Posted by Badandy127
The way I understand it on the iPhone/iPod side (in the past, not with the new 3.0 software update, no experience there), if the device fully renders the page, then goes into multiple safari pages view, I believe it takes a screen "snapshot" of the page as it was last rendered on the screen and utilizes that as the page thumbnail. Upon maximizing that safari page again, it reloads the page (since all it had cached was a snapshot thumbnail).
On the Pre, when a page hasn't completely loaded up and you go into card view, the card just caches a white card thumbnail, but continues to fully download the page, render it, and maintains the rendered page in memory so that when maximizing the card, it can display the page immediately without additional processing.