All but two players of the 26-woman world cup squad are still in the mix, but Sarah Beale and Amber Penrith do not feature after deciding to take some time away from the sport.
England, who are now in the first year of four-year cycle in preparation for the next tournament, will look to add to their five consecutive RBS 6 Nations grand slam crown's this season, but Street insists future progress is what is most important and success this season is not a priority.
Street said: "We are fortunate that our World Cup squad was relatively young and we haven't had many retirements so we have stability and experience here.
"However, this squad is all about development and looking to the future.
"We cannot just think about this season and that is why we are giving players who we think could be major international players in the future a chance now.
"We think it's important to take the opportunity to accelerate their development now rather than leaving it for a couple of years even if they don't make an immediate impact.
"Obviously the world cup defeat still hurts desperately but we are not here to sit and wallow. We are looking ahead. This season is a new challenge and we need to keep improving."
England Elite squad 2010/2011
ClaireAllan Richmond Centre
Margaret Alphonsi Saracens Flanker
Charlotte Barras Saracens Wing
Rachael Burford Richmond Centre
Rowena Burnfield Richmond 2nd Row
Abigail Chamberlain Richmond Centre
Rochelle Clark Worcester Prop
Emma Croker Richmond Hooker
Rosemarie Crowley Lichfield Prop
Rebecca EssexRichmond 2nd Row
* Hannah Field Wasps Flanker
Heather FisherWorcester Flanker
* Victoria Fleetwood Lichfield Hooker
Amy Garnett Saracens Hooker
Sophie Hemming BristolProp
* Natasha Hunt Lichfield Scrum Half
SarahHunter Lichfield Flanker
Laura Keates Worcester Prop
Jane Leonard Lichfield Flanker
* Stacey Maguire Lichfield 2nd Row
* Charlotte Male BristolProp
La Toya Mason Wasps Scrum Half
Francesca Matthews Richmond Wing
Joanna McGilchrist Wasps 2nd Row
* Sarah McKenna Old Albanians Fly Half
Katy McLean Darlington Mowden Park Fly Half
Katherine Merchant Worcester Wing
* Isobel Noel Smith BristolFlanker
Kimberley Oliver BristolFly Half
* Marlie Packer BristolFlanker
Fiona Pocock Richmond Full Back
Olivia PooreWasps Hooker
Alice Richardson Richmond Centre
Georgina Roberts Darlington Mowden Park Centre
Georgina Rozario Lichfield Scrum Half
Emily Scarratt Lichfield Centre
Catherine Spencer BristolNumber 8
Michaela Staniford Wasps Wing
Tamara TaylorDarlington Mowden Park 2nd Row
Amy Turner Richmond Hooker
Danielle Waterman Worcester Full Back
* Kay Wilson Richmond Full Back
* Denotes new squad member