England will name their 32-man elite training squad on Tuesday.
Coach Steve McNamara will also reveal his 24-strong England Knights party at a news conference.
There will be further announcements about fixtures against the Exiles and an end-of-season Four Nations tournament.
England will meet the Exiles - drawn from the Super League's top Antipodean players - twice in June and July, following 2011's inaugural fixture.
The game was introduced to give the national team a sterner test than the mid-season internationals against France that have taken place in previous years.
The first match against the Exiles will take place on Saturday, 16 June, with the second taking place on Wednesday, 4 July, although the venues have yet to be decided.
Last year's first meeting at Headingley attracted a crowd of more than 14,000, with the Exiles running out 16-12 winners.