Xbox One/PS4/PC - The Division Free Play From 4th-7th May

Just check whichever store you're browsing on and there should be an option for a free trial

Starting May 4 and running until May 7 (see below for exact times and dates for each platform), the free weekend is a chance to temporarily experience the Standard edition’s content – including its co-op features, its PvP Dark Zone, and a year’s worth of tweaks and improvements – the same way you would if you’d bought the game. And if you decide you want to keep adventuring after the free period ends, you can grab the Standard or Gold edition at a hefty discount for a limited time and continue where you left off, with your skills and inventory intact.