* It seems as in Odoo 13, wkhtml2pdf will replace by chrome headless: 

https://github.com/odoo/odoo/pull/32624

* Possible to disable the import option for specific view by adding import=”0" attribute in the tree tag. 

https://github.com/odoo/odoo/commit/55676110c8787dfafd34a6508b207952f5c5eb88

Ex: <tree import=”0">

* Possible that onchange will no more in odoo13, Instead of onchange, compute will be used with store=True. 

https://github.com/odoo/odoo/pull/32323

* Disable onchange for specific view

on_change="false" <field name="employee_id" on_change="false"/>

* Passing of context as keyword argument is mandatory in RPC calls. Before v13 it was optional but since v13, RPC calls must pass `context` as a keyword argument.

* New option added to automatically expand all the records while performing the Group By.

Ex: <tree expand=”1">

* Aggregate attributes in tree view, avg,sum,min,max

<field name=”subtotal” avg=”sub”/>

* .PO files for translations are removed from #odoo13 and instead of it, #Odoo will use #polib python library

* A sudo without changing user in #odoo!! Hopefully in v13. We won’t need anymore (link: https://github.com/OCA/server-backend/tree/12.0/base_suspend_security) github.com/OCA/server-bac…

* #Odoo 13 will add a lot more support/help to debug problems with security access. Support for warnings about rules, related fields, groups and security records! See

https://github.com/odoo/odoo/pull/30144

* In Odoo 13.0, no more selection fields backed as integer columnshttps://github.com/odoo/odoo/pull/29039 … #odoo

* #Odoo #v13 #news Passing of context as keyword argument is made mandatory in RPC calls. It was optional till now but from v13, RPC calls must always pass `context` as a keyword argument. Erp Harbor #OdooNews #OdooERP

https://github.com/odoo/odoo/commit/1ced3bfca457ac50845637bcd42a8e53bd7f088d

* A new implementation of prefetching is on its way for #Odoo 13. Records come with a simpler data structure for prefetching, namely record._prefetch_ids, which is an iterable of record ids to prefetch.

link ->https://github.com/odoo/odoo/pull/32905

* <groupby name=”groupedField”> <! — must be a many2one → <button type=”object” name=”my_method” string=”Button1"/> </groupby>

* In #Odoo13 binary fields will be stored as attachments by default.

https://github.com/odoo/odoo/pull/29308

* no more support for http://api.one from #Odoo13.

https://github.com/odoo/odoo/pull/29511

* In #Odoo13, There will be a new Decimal Precision for Volume. In older versions, on products, it is always set to 2. Some users that work on more precise volume would like to increase it.https://github.com/odoo/odoo/commit/c1a5221ba212ae4099c21beb56451447b03016b7 … #Odoo#OdooUpdates

* Odoo13 will come with a new CLI option for migration path.

https://github.com/odoo/odoo/pull/32650

* #Odoo 13 will get a huge jQuery upgrade from V1.11.1 to V3.3.1 (the latest version)! See

https://github.com/odoo/odoo/pull/28457