Getkate has played six T20Is for Ireland, but is uncapped in ODI cricket. Meanwhile, uncapped legspin-bowling allrounder Gareth Delany has broken into Ireland's T20I squad. He has played 19 T20s so far, picking up seven wickets at an economy rate of 6.22.
Left-arm quick Josh Little, who claimed a four-wicket haul against England earlier this year, and seamer Craig Young will make up the T20I pace attack along with Boyd Rankin, Tyrone Kane, and Getkate.
Batsman Greg Thompson, who made his international debut for Ireland in 2008 and last represented the side in 2017, has been recalled into the T20 set-up after a consistent run for Northern Knights.
"The selectors are also mindful of the balance of the squad and have taken note of current form, and the decision to recall Greg Thompson into the national T20 set-up is recognition of his impressive form," Andrew White, the chairman of selectors, said. "With the T20 World Cup Qualifier on the horizon, we want to ensure no stone is left unturned in finding a side that will give us the best possible chance of being successful, so we wish Greg well with this opportunity.
"Likewise, the form of Northern Knights' allrounders Mark Adair and Shane Getkate can't be denied, and we are excited at the first inclusion of Gareth Delany, who has clearly demonstrated his skills with both bat and ball during the opportunities he has had with the Wolves and at inter-provincial level."
ODI squad: William Porterfield (capt), Mark Adair, Andrew Balbirnie, Shane Getkate, Tyrone Kane, Andrew McBrine, James McCollum, Tim Murtagh, Kevin O'Brien, Boyd Rankin, Simi Singh, Paul Stirling, Lorcan Tucker, Gary Wilson.
T20I squad: Gary Wilson (capt), Mark Adair, Andrew Balbirnie, Gareth Delany, George Dockrell, Shane Getkate, Tyrone Kane, Josh Little, Kevin O'Brien, Boyd Rankin, Paul Stirling, Greg Thompson, Lorcan Tucker, Craig Young.