If not Kona Asphalt Commuter then what? Recetly I spotted Kona Asphalt Commuter, one of this series here:
http://www.konaworld.com/asphalt_commuter.cfm?content=dew_plus
Why such bike is so special for me -- because right from the shop I could have all things I want in my dream bike, namely:

hardtail
fork w/o suspension
normal rear derailleur (i.e. just like in MTB bikes)
disc brakes

And big wheels (this I am not sure about because I didn't ride on 28&quot; wheels, so I don't know if they will be good for me).
I googled, and so far I found another manufacturer making similar bikes -- Trek 7.3 FX Disc:
http://www.trekbikes.com/us/en/bikes/town/fitness/fx/7_3_fx_disc/#/us/en/model/features?url=us/en/bikes/town/fitness/fx/7_3_fx_disc
Question
Are there other bikes currently manufactured with those four features? This is essential because when buying new bike I wouldn't like to modify it right from the start.
I rephrase: I am looking for a bike which looks and feels MTB, but it is designed for speed while commuting in the city. So normal road bikes are no-go, typical city bikes and also bikes with suspensions (even in a seatpost).
Little update
More bikes -- Scott with SUB series, and Merida with Speeder (just one model here).
That sort of bike is generally called a hybrid/commuter in the UK (and I think it may be similar in the US).  There are plenty of other manufacturers.  Not all hybrids will meet your requirements but there will be quite a few that do.  You can almost certainly find one with 26" wheels if you prefer too.  I personally find the larger wheels good though, so I would recommend you simply go for a test ride.

The problem with finding them is really a lack of consistency with the terminology 
across shops, countries and manufacturers.  There is also simply the problem that with so many different bike types and configurations bike shops will only stock a selection and your required bike may not be in that selection.  There is however a reasonably good chance if you can find one close in the shop that they will be able to order in the right configuration for you.

Update: tried to reflect confusing terminology a bit better.