When EMC will deploy a Service Pack for ECC 6.0?

I've heard that we can expect v6.1 within a few months, but nothing firm. I know what you mean though. I just went through an install and the patching took longer than the initial install.

Unfortunately I couldn't wait for 6.1 to come out

And of the EMC folks have a better timeline on this?

We were told release in June for 6.1, but this obviously could slip.

There is no Service Pack for 6.0 planned. 6.1 will be released in July. In the mean time, the patch strategy for 6.0 patches has changed somewhat. Take a look at Powerlink. You'll see some labeled as "cumulative" patches. Just install these. With few exceptions, they include all fixes for each component. There will be a total of 11 of these so the most you'd have to install at any time would be 11.