Lions duo Gordon D'Arcy and Nathan Hines have been named in the initial panel for this weekend's opening home game of the Magners League campaign and they are joined by hooker Bernard Jackman.
Academy duo David Kearney and Brendan Macken have also been added to the panel alongside Niall Morris who made his debut for the province last weekend.
The other debutants from the game in Llanelli, summer signings Shaun Berne and Mike Ross, are also included.
The team is expected to be named on Friday afternoon.
Meanwhile, over 13,500 tickets have already been sold for Saturday's match.
Tickets are available this week online from www.leinsterrugby.ie, Ticketmaster outlets nationwide, Spar Donnybrook and the Leinster Rugby Store in Donnybrook.
Tickets will be available on the day from Ticketmaster outlets on Angelsea Road (opposite the Herbert Park Hotel) and Simmonscourt Road, from 4.30pm until kick-off.
LEINSTER Squad (v Newport Gwent Dragons): Backs (12) - Shaun Berne, Gordon D'Arcy, Shane Horgan, Chris Keane, David Kearney, Simon Keogh, Brendan Macken, Fergus McFadden, Niall Morris, Isa Nacewa, Paul O'Donohoe, Jonathan Sexton.
Forwards (15) - Leo Cullen (capt), John Fogarty, Jason Harris-Wright, Cian Healy, Nathan Hines, Bernard Jackman, Shane Jennings, Stephen Keogh, Ronan McCormack, Kevin McLaughlin, Sean O'Brien, Malcolm O'Kelly, Mike Ross, Devin Toner, Stan Wright.