Is Vietnam Visa on arrival still available in 2015?

Base on the content of article 18, chapter 2 of the law on Entry, exit, transit, and residence of foreigners in Vietnam, Visa on arrival is still available.
To obtain the Visa upon arrival, you must apply the Visa online first. After 1 or 2 working days, the Visa approval letter (approved by Vietnam Immigration Department) will be sent to you by email. This letter says that you are allowed to pick up the Visa at Vietnam airports. You need to print the letter out, use it for boarding and getting the Visa when you arrive Vietnam.
There are 4 international accepts Visa on arrival: Tan Son Nhat airport (in Ho Chi Minh or Saigon city), Noi Bai airport (in Ha Noi city), Da Nang airport (Da Nang city) and Cam Ranh airport (in Nha Trang city). 

Article 18. Visa issuance at border checkpoints

1. A foreigner shall be issued with a visa at a border checkpoint in the following cases:

a) The foreigner departs from a country that does not have any visa-issuing authority of Vietnam;

b) The foreigner has to stop by multiple countries before arriving at Vietnam;

c) The foreigner comes to Vietnam to take a tour organized by an international tourism company in Vietnam;

d) Foreign crew members of a ship anchoring at a Vietnam’s port and wish to leave Vietnam through another border checkpoint;

dd) The foreigner comes to Vietnam to attend a funeral of his/her relative, or to visit a gravely ill relative;

e) The foreigner comes to Vietnam to participate in dealing with an emergency, rescue, prevention of natural disasters, epidemics, or for another purpose at the request of a competent authority of Vietnam.

2. Any foreigner issued with a visa at a border checkpoint shall submit his/her passport or laissez-passer, fill the application for the visa, and append his/her picture at the immigration counter. A child under 14 years of age shall be mentioned in the same application filled by his/her parent or guardian in case the child use the same passport of his/her parent or guardian.

3. The immigration counter shall compare the application with the notification of the immigration authority to issue the visa.

(Source: Vietnam Visa on Arrival 2015 )