There is no 335.50. There is a 337.50 but its a Beta driver. 335.25 is the latest WHQL driver.
Here's a link to the 337.50 beta driver.http://www.geforce.com/drivers/results/74636
You mean 335.23
as the latest right ?
And yes my friends are using the BETA but I am not gonna use the BETA as BETA always has issues and bugs . I am gonna be awaiting the full standalone version