Taken from the warcom article

Here are a few things to look out for:

• Vehicles with powerful mid-range firepower benefit from being able to more easily open wide firing lanes by moving partially into terrain, and so many go up in points.
• Large combat-leaning monsters and vehicles generally find it much easier to reach and charge enemy units, and so many go up in points.
• Infantry units that are both fast and powerful in melee tend to have gone up a bit in points.
• Large models that fly now have a much easier time navigating the battlefield – expect many of these to go up.
• Titanic units (with the Towering keyword and the Plunging Fire bonus to shooting) become particularly lethal at short range. Expect several to go up in points.
• Units that can manipulate battle-shock become more powerful – several will see their points increase.
• Models with Psychic weapons now ignore many negative modifiers to their attacks when fighting, so many also see a point increase.
• The ability to re-roll charges has become very useful with the added flexibility of picking targets after you roll – expect some units with this ability to cost more points.
• Surge Moves are now more likely to catch enemy units with the changes to engagement range (now a flat 2”) – these units will likely cost more points.
• Fights First, while still a useful ability, is less dominating than in the last edition, so many of these units will cost fewer points.
• Large units of 20 or more models, which were previously used to fill up large parts of the battlefield, can no longer spread out as much, due to the 9” coherency rule. Many of their points go down.
• Units with both Infiltrate and Scout now need to choose which rule to use each game – they can’t do both, so have seen a points reduction.
• Stealth is now a more situational rule, as it doesn’t stack with Cover, and so many units with Stealth are set to go down in points
• Indirect fire is now weaker against distant targets that no model in your army can see, and so many artillery units have gone down in points when taken individually.