When is M3? I need fractional scroll positions badly...

When is M3? I need fractional scroll positions on the List control badly... Is there beta/dev code or a third-party subclass with this functionality?
The only thing I could find was the following, but when is the deadline for M3? I really, really need fractional scrolling AND the advanced functionality of List. (I also need variable row height).
http://opensource.adobe.com/wiki/display/flexsdk/Flex+3
List and Data Effects
Planned milestone: M3
Enhance the usability and visual appeal of some of the List-based components (List, TileList, DataGrid) by adding more animation support.
* Smooth scrolling with fractional scroll positions
* Effects that occur when data changes
I also found this thread, but no good information.
http://www.mail-archive.com/[email protected]/msg67093.html

<div class=Section1> 10.0pt;font-family:Arial;color:navy'>I would not reimplement scrollVertically.<o:p></o:p> 10.0pt;font-family:Arial;color:navy'><o:p> </o:p> 10.0pt;font-family:Arial;color:navy'>What is going on is that there is always some row fixed at the top of listContent. ScrollVertically changes which row that is. The code I added shifts the position of listContent so that it is a fractional row offset. If you want scrolling to tween, I would probably let scrollVertically do its thing and then tween the position of listContent. You’ll see logic around our selection tweens that know a tween is in progress, cancel the tween and start a new one. You’ll need to do the same for when someone is pounding on the scrollbar arrows.<o:p></o:p> 10.0pt;font-family:Arial;color:navy'><o:p> </o:p> 10.0pt;font-family:Arial;color:navy'>-Alex<o:p></o:p> 10.0pt;font-family:Arial;color:navy'><o:p> </o:p> <div> <div class=MsoNormal align=center style='text-align:center'>face="Times New Roman"> <hr size=2 width="100%" align=center tabindex=-1> </div> font-family:Tahoma;font-weight:bold'>From:face=Tahoma> Nathanael Jones [mailto:[email protected]] Sent: Monday, March 24, 2008 11:52 AM To: [email protected] Subject: Re: When is M3? I need fractional scroll positions badly...<o:p></o:p> </div> 12.0pt'><o:p> </o:p> face="Times New Roman">A new message was posted by Nathanael Jones in Developers -- When is M3? I need fractional scroll positions badly... Actually, I just finished reading your code :) - I found it 10 minutes ago. My situation requires variable row heights, but I think I can get by without full smooth scrolling support, as long as I can animate scrolling between two verticalScrollPosition values. Should I try re-implementing the scrollVertically function with tweens? ListBase and List are large classes, and I haven't spend the time to commit their code to memory and fully understand everything related to scrolling. Would that work? Are actual x/y coordinates write-only? Would tweening them asynchronously from scrollVertically be safe? <o:p></o:p> <div class=MsoNormal><span style='font-size:12.0pt'> <hr size=2 width=200 style='width:150.0pt' align=left> </div> face="Times New Roman">View/reply at <a href="http://www.adobeforums.com/webx?13@@.59b4c611/1">When is M3? I need fractional scroll positions badly...</a> Replies by email are OK. Use the <a href="http://www.adobeforums.com/webx?280@@.59b4c611!folder=.3c060fa3">unsubscribe</a> form to cancel your email subscription.<o:p></o:p> </div>

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