Editing Bluetooth (section)

=== {{Anchor|v4.1}}Bluetooth 4.1 ===
The Bluetooth SIG announced formal adoption of the Bluetooth v4.1 specification on 4 December 2013. This specification is an incremental software update to Bluetooth Specification v4.0, and not a hardware update. The update incorporates Bluetooth Core Specification Addenda (CSA 1, 2, 3 & 4) and adds new features that improve consumer usability. These include increased co-existence support for LTE, bulk data exchange rates—and aid developer innovation by allowing devices to support multiple roles simultaneously.<ref>{{cite web |url=http://www.bluetooth.com/Pages/Press-Releases-Detail.aspx?ItemID=197 |title=Press Releases Detail {{pipe}} Bluetooth Technology Website |publisher=Bluetooth.com |date=4 December 2013 |access-date=13 May 2014 |archive-date=23 June 2014 |archive-url=https://web.archive.org/web/20140623092659/http://www.bluetooth.com/pages/press-releases-detail.aspx?itemid=197 |url-status=dead }}</ref>

New features of this specification include: 
* Mobile wireless service coexistence signaling
* Train nudging and generalized interlaced scanning
* Low Duty Cycle Directed Advertising
* L2CAP connection-oriented and dedicated channels with credit-based flow control
* Dual Mode and Topology
* LE Link Layer Topology
* 802.11n PAL
* Audio architecture updates for Wide Band Speech
* Fast data advertising interval
* Limited discovery time<ref>{{cite web |url=https://www.bluetooth.org/en-us/specification/adopted-specifications |title=Adopted Specification; Bluetooth Technology Website |publisher=Bluetooth.com |date=4 December 2013 |access-date=14 May 2014 |archive-date=3 October 2015 |archive-url=https://web.archive.org/web/20151003173654/https://www.bluetooth.org/en-us/specification/adopted-specifications |url-status=dead }}</ref>
Some features were already available in a Core Specification Addendum (CSA) before the release of v4.1.