If you subscribe to the Photoshop Creative Cloud photographers package you you will have access to Photoshop CC2014, with Lightroom 5.5 and Lightroom Mobile App for iPad and iPhone gratis.
Lightroom 5 is still sold as a perpetual license but you do not get access to the Lightroom Mobile. You need the Cloud to sync Lightroom with Lightroom Mobile.
Is the current boxed version of LR 5 the same version you get if you go for the subscription?
Yes it is. However you require to use the Adobe Creative Cloud to sync your full version of Lightroom with the Lightroom Mobile App.
See where is says. "Important: To update to the latest version of Lightroom, you must have a subscription to Creative Cloud or the Photoshop Photography Program."