USB 3 on the Mac was delayed by Intel Inc until
2012 when it was incorporated into Ivy Bridge this year.
The first USB 3.0 consumer products were announced and shipped by Buffalo Technology in November
2009, while the first certified USB 3.0 consumer products were announced January 5,
2010, at the Las Vegas Consumer Electronics Show (CES), including two motherboards by ASUS and Gigabyte Technology.
Intel rival, AMD, began supporting USB 3 with its Fusion Controller Hubs in
2011.
Source:
http://en.wikipedia.org/wiki/USB_3.0
Yes, Apple is 2 years late but other computer makers got USB 3 by dealing with non-Intel USB 3 host controller makers.
I would have wanted it in my 2010 and 2011 MBPro but the past is the past. USB 3 on the Mac would have meant cheaper external HDD.
I think you can buy a 3rd party fingerprint reader that will attach via USB 2 for your Mac. As for software... I do not know.
As for touchscreen notebooks... hasn't this been done before with the original Tablet PC in 2000? The tablet market only perked up with the original iPad.
Apple will incorporate touchscreen into notebooks when the technology and price are appropriate. As such I do not mind the wait.