Just did a little digging myself to try to guess a date. Here's what I came up with:
* Ferrari 3000 was announced Monday October 13th 2003
* Announcement happened the day after the last race of the F1 2003 season, the Japanese Grand Prix, Friday October 10th - Sunday October 12th 2003
* Ferrari 4000 was announced Friday May 27th 2005
* Computex 2005 was Tuesday May 31st – Saturday June 4th, 2005
* The last F1 race before Computex 2005 was the European Grand Prix, Friday May 27th - Sunday May 29th 2005
So... It seems to me that Acer management likes to be symbolic with their Acer Ferrari announcement dates, timing them on the weekdays right around F1 Grand Prix weekends for the best possible publicity.
* Computex 2006 is Tuesday June 6th - Saturday June 10th 2006
* The last F1 race before Computex 2006 is the Monaco Grand Prix, Thursday May 25th - Sunday May 28th, 2006 (Monaco doesn't allow cars to run on Friday, so practice is moved to Thursday)
* Ferrari aren't leading the championship, nor is the season ending, and there's no certainty of them winning the race, so announcing after the weekend doesn't make sense as the announcement might get no coverage if Ferrari lose
* Announcing on Friday doesn't make sense since there's no track running, you get an extra day's publicity by announcing early, and you avoid problems with deadlines for news media in Asia who would be going home / to print by the time a Friday European announcement was made
Other than Wiz33, I've not seen anybody definitively state that the new Ferrari is about to be announced - Acer's AMD Turion 64 X2 mobile-based Computex announcement(s) could be new Aspire / Travelmate notebooks. Assuming Wiz33 is right though, I see two distinct possibilities.
Most likely, if there's a new Acer Ferrari laptop coming, it will be announced alongside this weekend's race - and sometime in the morning (Monaco time) of May 25th makes the most sense to me.
If the laptop isn't announced at the Grand Prix weekend, it makes more sense to hold it until almost the last moment of Computex starting to make sure the news is still fresh as the show starts. If that's the case, I'd aim to announce in the morning (Taiwan time) of June 2nd - giving you time to get into the weekend papers before the show starts, but making sure your announcement is still fresh but not lost in the last minute rush of news.
So - to sum up, look for one of the following if I'm right:
* New Ferrari notebook on May 25th
* New Ferrari notebook on June 2nd
* No new Ferrari notebook for Computex, just Aspire / Travelmate notebooks