It is up to the receiving institution to decide how they want to receive those scores: online (which doesn't add additional delivery time), or paper mail (which adds some additional shipping time).
http://academia.stackexchange.com/questions/29864/how-long-it-takes-for-gre-score-to-be-delivered-to-graduate-school
The computer-delivered GRE® revised General Test takes about 3 hours and 45 minutes and consists of three separately timed sections: 1  Verbal Reasoning — There are two 30-minute sections, each containing 20 questions. 2  Quantitative Reasoning — There are two 35-minute sections, each containing 20 questions.
http://www.takethegre.com/gre-revised-general-test-faq
How is the new GRE different from the old GRE? The primary changes to the GRE are in question type and length. Content-wise, the material on the new GRE is basically the same as the material on the old GRE. Here is a link to a chart detailing the differences between the old and new GREs.
http://www.newgre.org/gre-faqs/
At about the same time as your scores are available in your My GRE ® Account, your official score reports are sent to the schools you designated. If you take the computer-delivered test, it is about 10 to 15 days after your test date. If you take the paper-delivered test, it is about six weeks after your test date.
http://www.takethegre.com/gre-revised-general-test-faq
up vote 1 down vote. About 10–15 days after your test date, your official scores will be available in your My GRE Account, and your scores will be sent to the score recipients you designate. Per the ETS website, for the online general GRE (emphasis mine):
http://academia.stackexchange.com/questions/29864/how-long-it-takes-for-gre-score-to-be-delivered-to-graduate-school
You will not receive a score for them. The paper-delivered GRE® revised General Test takes up to 3 hours and 30 minutes and consists of three separately timed sections: 1  Verbal Reasoning — There are two 35-minute sections, each containing 25 questions. 2  Quantitative Reasoning — There are two 40-minute sections, each containing 25 questions.
http://www.takethegre.com/gre-revised-general-test-faq
What changes have been made to the analytical writing section of the new GRE? There are only two changes that have been made to the writing section of the new GRE. First, the “analyze issue” essay is only 30 minutes instead of 45 minutes. Second, the “analyze issue” essay has only one prompt instead of two. How long is the new GRE? The new GRE is longer than the old GRE. Formerly, the GRE took approximately 3 hours to complete; the new GRE takes approximately 4 hours to complete.
http://www.newgre.org/gre-faqs/
Three scores are reported on the GRE revised General Test: 1  A Verbal Reasoning score is reported on a 130–170 score scale, in 1-point increments. 2  A Quantitative Reasoning score is reported on a 130–170 score scale, in 1-point increments.
http://www.ets.org/gre/revised_general/faq/
Ideally, the GRE distribution will likely be a general bell curve in which the majority of test takers score around 150 on the verbal and quantitative reasoning sections, so a “good” score would be in the upper 50%, about 150 or above.
http://www.newgre.org/gre-faqs/
If you have registered to take the GRE revised General Test, you must change or cancel your test registration no later than four days before your test date or your test fee will be forfeited. For example, the deadline to cancel a Saturday appointment is Tuesday.
http://www.ets.org/gre/revised_general/faq/
how long does it take for the gre scores?
It take about 10 to 15 days after your test date for the GRE scores. It takes about 10 to 15 days for your GRE score after your test date.