The latest news I've heard is that House conservatives reached out to Cruz and Lee for direction in the battle over the CR. Cruz and Lee urged them to reject Boehner's proposal to fight the defunding/delay of Obamacare until considering the debt limit legislation. They listened to Cruz & Lee, and Boehner could not get the votes to implement his proposal. Cruz and Lee also pledged to support those conservatives in this position.
We can say a lot of negative things about Cruz (and a lot of people already have), but there are some things he needs credit for.
First, he is willing to put his principles before the politically expediency of the moment. He's taken plenty of slings and arrows from Rs and Ds alike, and hasn't resorted to the name-calling of his detractors.
Second, he is demonstrating leadership. He formulated a plan to achieve a goal, and conservatives seem to believe that he does, indeed, have a plan; including contingency plans.
Third, he really does seem to know how the machine of Congress works. He was realistic about the outcomes, and he still was willing to set himself up as a target with his 21-hour speech. People like McCain, Reid and Schumer looked pathetically small in their demeaning criticism of Cruz for standing up for his beliefs.
I saw one commentator make the analogy: Col. Travis knew there was no good outcome to the battle at the Alamo, but his defense of his beliefs, at great sacrifice, became an integral part of making TX part of the US, rather than Mexico.
This may be Cruz's Alamo ... but, unlike Travis, I don't think it will cost him his life (political, that is). He'll be around to provide leadership and support to conservative candidates in the 2014 elections.
Cruz may be polite (avoiding the name-calling ploys of Reid and others) ... but he sure ain't "Mr. Nice Guy". He doesn't back down.