SonyAddict reports that the major Sony a9 firmware update version 5.0 that was announced in January will be officially released on March 25th. Examples of the upcoming Sony A9 real-time tracking feature can be found here.
Recently the price of the Sony a9 dropped in the US by $500 to $3,998: Adorama, B&H, Amazon (some listings offer free accessories).
Here is some additional information on the upcoming Sony a9 firmware update version 5.0 (click for larger view):
