http://texas.rangers.mlb.com/NASApp/...=.jsp&c_id=tex

Hart said the Rangers, rather than sacrifice top prospects for two-month rentals, will continue to provide opportunities for the young pitching in the organization. The club could then try to augment the pitching either through an August waiver-wire deal, or through trades or free agency during the offseason.
I think the result will be the same as last year for this team...start out well and fade when the pitching sputters and the offense isn't crushing the ball at the same rate as they were earlier in the season.