Does the iPhone SDK really take up ~5GB every time you upgrade it?
<p>Every time I upgrade to a new version of the SDK (beta and general releases), I noticed that installer says it's going to take up around 5-6 GB of space. After several upgrades you would expect your hard drive to be full.</p>

<p>Doesn't it just update the files that were changed? Or does it uninstall the old version (thus freeing around 5-6 GB of space) and then install the new version? Or does it really take up an additional 5-6 GB of space?</p>

<p><strong>Update:</strong> I'm installing to the same location it was installed before.</p>

<p><strong>Update:</strong> Will it automatically delete the old files which are no longer necessary in this new SDK and are simply taking up room?</p>
