easier and lighter program like gb probably will suffer less downtime, as experienced from the recent 4.01 patch, GB was down for few days (3 i think if i'm not mistaken)
so if there is no exception or no surprises, GB most probably be down for few days
heavier and more complicated application like HB bound to be down for longer time, again, this is based on previous experience from the 4.01patch. It took them around 3weeks to publish the [Release] version. (though the [Test] HB was available a week earlier than the [Release])
so, your best guess it will take some days for HB.
hope this answered your curiosity... if you be in the mods/admins/devs shoes, you know you dont like to give promises you can't keep or reply any questions that has vague answers. Really, theres just too much variable in this case.
*off topic*
i'm going to teach you all how chinese people calls anyone a dick "chao ni ma de 'B'" !!!