At least there is no mention of selling one of the carriers, merely that it will be "kept at extended readiness".
SDSR also 'speaks' of an annual increase in the defence budget from 2015 onwards. Although the phrase "We cannot now foresee circumstances in which the UK would require the scale of strike capability previously planned (in referring to operating only one carrier) there's nothing to suggest that if perceived security threats warrant it there won't be moves to have both carriers able to operate at the same time at some point in the future. Indeed, SDSR does mention this option.
They also reckon Dave-C will be 25% cheaper wrt through life costs.
Sorry for the constant 'updates', my first scan didn't glean every detail.